#4FA3AB
Closest named color: Cadet Blue (#5F9EA0). oklch(66.6% 0.082 203.7), rgb(79, 163, 171).
Aa
Black text reads best on this color (7.15:1).
About this color
#4FA3AB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.082 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.020 away. Black text reads best on it, at 7.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.15:1 |
| White text | 2.93:1 |
Values
| HEX | #4FA3AB |
| RGB | rgb(79, 163, 171) |
| HSL | hsl(185, 37%, 49%) |
| OKLCH | oklch(66.6% 0.082 203.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #4FA3AB | 2.93:1 | Fails | Lc -60.9 | Content text, not long reading |
| Black text on #4FA3AB | 7.15:1 | AAA | Lc 48.5 | Large or bold text, headings |
| #4FA3AB text on white | 2.93:1 | Fails | Lc 55.6 | Large or bold text, headings |
| #4FA3AB text on black | 7.15:1 | AAA | Lc -46.2 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C9DEE0
oklch(88.6% 0.023 203.7)
-
Step 300
300
#A3C9CC
oklch(80.9% 0.041 202.3)
-
Step 400
400
#6FADB3
oklch(70.8% 0.064 203.6)
-
Step 500
500 (this color)
#4FA3AB
oklch(66.6% 0.082 203.7)
-
Step 600
600
#19828B
oklch(55.6% 0.089 204)
-
Step 700
700
#046E76
oklch(49.1% 0.083 203.7)
-
Step 800
800
#0D5A60
oklch(42.8% 0.069 203.2)
-
Step 900
900
#174A4E
oklch(37.7% 0.053 202.5)
-
Step 950
950
#0F2B2E
oklch(26.9% 0.034 204.8)
#4FA3AB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #989DAC | 0.082 |
| Deuteranopia (no green cones) | #8992AB | 0.075 |
| Tritanopia (no blue cones) | #00A9A5 | 0.038 |
| Achromatopsia (no color) | #979797 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA3AB
#4FA3AB
oklch(66.6% 0.082 203.7)
- #C2807C
#C2807C
oklch(66.7% 0.083 23.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #4FA3AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.020
- Dull Teal #5F9E8F ΔE 0.040
- Greyblue #77A1B5 ΔE 0.045
- Grey Teal #5E9B8A ΔE 0.047
- Sea #3C9992 ΔE 0.047
- Light Sea Green #20B2AA ΔE 0.048
- Turquoise Blue #06B1C4 ΔE 0.048
- Persian Green #2A9D8F ΔE 0.052
Use #4FA3AB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.